Содержание и вынос основных элементов питания овсом голозерным при возделывании на дерново-подзолистой супесчаной почве
2010
Lapa, V.V. | Lopukh, M.S., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
In the conditions of the Republic of Belarus there was analyzed the content and removal of the main nutrient substances by hulless oat (Avena nuda) crops cultivated on sod-podzolic sandy loam soil. Research results showed that the chemical composition of hulless oat depended on doses of mineral fertilizers. Depending on dozes of mineral fertilizers the content of general nitrogen in grain composed 2,25-2,70%, phosphorus – 1,15-1,32%, potassium – 0,41-0,50%, calcium – 0,02-0,05%; magnesium – 0,14-0,17%. The straw of hulless oat contained the following elements: general nitrogen – 0,39-0,60%; phosphorus – 0,35-0,43%; potassium – 2,70-3,35%; calcium – 0,14-0,20%; magnesium – 0,10-0,12%. There were determined the parameters of specific removal of mineral nutrition elements which can be used for calculation of fertilizer doses for the planned hulless oat yielding capacity. In the conditions of yieldinf capacity of 48.7 c/ha the specific removal of mineral nutrition elements was the following: nitrogen – 27,9 kg/t; phosphorus – 14,8 kg/t; potassium – 35,0 kg/t; calcium – 2,1 kg/t; magnesium – 2,4 kg/t.
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